package com.edu.utils;

/**
 * @Author ZCN
 * @Date 2021/11/11 22:36
 * @Version 1.0
 **/
public class StringUtil {
    public static void isNull(String a) throws Exception{
        if(a == null || a.equals("")){
            throw new RuntimeException("参数不能为空！！！");
        }
    }
}
